Display screen with a graphical user interface



FIG. 1 is a front view of a display screen with a graphical userinterface showing our new design;

FIG. 2 is a front view of a second embodiment thereof;

FIG. 3 is a front view of a third embodiment thereof;

FIG. 4 is a front view of a fourth embodiment thereof;

FIG. 5 is a front view of a fifth embodiment thereof; and,

FIG. 6 is a front view of a sixth embodiment thereof.

The broken line showing of display screens, text, and graphical elementsform no part of the claimed design.

CLAIM The ornamental design for a display screen with a graphical userinterface, as shown and described.